A soft package aluminum-plastic film double-pit depth detection device

Abstract

This utility model relates to the technical field of testing devices, and specifically discloses a device for detecting the depth of double pits in flexible aluminum-plastic film. The device includes a support mechanism, a positioning mechanism, and a measuring mechanism. The support mechanism includes a base, and the positioning mechanism includes a base plate and a pressure plate. The base plate is located on the base and is used to place the aluminum-plastic film. The pressure plate is vertically and vertically positioned directly above the base plate via a drive unit. The measuring mechanism includes a laser rangefinder detector used to measure the depth of the double pits on the aluminum-plastic film. A pressure sensor is integrated on the pressure plate. The pressure sensor monitors the downward pressure applied to the aluminum-plastic film by the pressure plate in real time and feeds it back to the control module of the drive unit. When the downward pressure reaches a preset threshold, the drive unit stops operating. The pressure plate with the integrated pressure sensor avoids applying excessive force to the aluminum-plastic film, preventing deformation of the film during testing and avoiding affecting the test results.

Description

Technical Field

[0001] This utility model relates to the technical field of detection devices, and specifically to a device for detecting the depth of double pits in soft-pack aluminum-plastic film. Background Technology

[0002] Soft-pack lithium batteries have become one of the mainstream battery packaging methods due to their ultra-thinness, high safety and shape flexibility. The core packaging material, aluminum-plastic film, needs to be formed into a cavity to accommodate the battery cell through a punching process. Currently, the industry generally uses mechanical cylinder positioning and pressing punching equipment. However, due to the soft and deformable nature of the aluminum-plastic film itself, it is difficult to control the punching depth. Therefore, before use, the punching depth needs to be tested to ensure the product forming quality.

[0003] In existing technologies, the depth of the punching hole can only be measured at the four corners using a vernier caliper depth measuring rod. The depth of the hole in the middle and other areas cannot be measured. However, due to the deformation of the aluminum-plastic film during punching, the hole depth at the corners is shallower than that in the middle area. The aluminum-plastic film is also softer, and the measuring instrument has no point of force, which can easily deform the aluminum-plastic film. As a result, the test results often differ significantly from the actual hole depth. When using a double-hole punching and encapsulation method, measuring the depth of a single hole cannot correlate the depths of both holes, making it difficult to monitor the overall quality of the double-hole punching and the product cell. This poses a quality risk to the product cell. Utility Model Content

[0004] This utility model addresses the aforementioned problems and aims to provide a device for detecting the depth of double pits in soft-pack aluminum-plastic film, which can detect the depth of double pits in aluminum-plastic film and improve detection accuracy.

[0005] To achieve the above objectives, this utility model provides a device for detecting the depth of a double pit in a flexible aluminum-plastic film, comprising:

[0006] Support mechanism, including a base;

[0007] The positioning mechanism includes a base plate, a pressure plate, and a drive unit. The base plate is fixed on the base and is used to place the aluminum-plastic film. The pressure plate is vertically and vertically positioned directly above the base plate by the drive unit and can cooperate with the base plate to clamp the aluminum-plastic film.

[0008] The measuring mechanism includes a laser rangefinder, which is movably positioned directly above the pressure plate for selecting multiple measuring points along the edge of the double pits and measuring the pit depth of the double pits.

[0009] The pressure plate is integrated with a pressure sensor, which is used to monitor the downward pressure provided by the pressure plate to the aluminum-plastic film in real time and feed it back to the control module of the drive unit.

[0010] When the downward pressure reaches a preset threshold, the drive unit stops operating.

[0011] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, the support mechanism further includes a support seat located above the base, the support seat includes a column and a top plate fixed on the top of the column, the drive unit is fixed on the top plate, and the piston rod of the drive unit can pass through the top plate and connect with the pressure plate.

[0012] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, the four columns are respectively arranged at the four corners of the base, the four corners of the top plate are respectively connected to the tops of the four columns, and the four corners of the pressure plate are respectively movably sleeved on the four columns and can move up and down along the columns.

[0013] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, the driving unit is a cylinder, and the two cylinders are symmetrically arranged on both ends of the top plate, and the piston rods of the two cylinders pass through the top plate and connect to both ends of the pressure plate.

[0014] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, a through-hole area is opened in the middle of the top plate, and the laser rangefinder is located directly above the through-hole area.

[0015] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, the measuring mechanism further includes a fixed frame. The top plates on both sides of the through hole area are provided with first guide rails arranged along their length direction. The two ends of the fixed frame are respectively slidably connected to the two first guide rails. The fixed frame is provided with a second guide rail arranged along the width direction of the top plate. Both laser rangefinders can be movably connected to the second guide rail.

[0016] According to the above-described device for detecting the depth of a double pit in a soft-pack aluminum-plastic film, the measuring mechanism also includes a camera. Two cameras are symmetrically arranged on both sides of the base. The cameras are used in conjunction with the laser rangefinder to inspect the verticality of the double pits.

[0017] According to the above-described double-pit depth detection device for soft-pack aluminum-plastic film, the two cameras are respectively fixed on the two symmetrical sides of the base by two fixing plates, and the cameras are integrated with a light source for illuminating the aluminum-plastic film.

[0018] According to the above-described soft-pack aluminum-plastic film double pit depth detection device, the base plate is provided with an air extraction hole, an air chamber and an air pipe. Multiple air chambers are arranged at intervals in the base plate, and each air chamber is connected to multiple air extraction holes. One end of the air extraction hole is connected to the air chamber, and the other end of the air extraction hole is located at the top of the base plate. One end of the air pipe is connected to the air chamber, and the other end of the air pipe can extend out to one side of the base plate and is connected to the air extraction device.

[0019] The above-described soft-pack aluminum-plastic film double pit depth detection device further includes a control mechanism, which includes a start switch and is electrically connected to the positioning mechanism and the measuring mechanism.

[0020] This utility model has the following beneficial effects:

[0021] 1. The pressure sensor on the pressure plate can monitor the downward pressure applied to the aluminum-plastic film in real time. When the downward pressure reaches the preset threshold, the drive unit stops operating. At this time, the pressure applied to the aluminum-plastic film by the pressure plate is stopped to avoid deformation of the aluminum-plastic film caused by detection and to avoid affecting the test results.

[0022] 2. The laser rangefinder has high measurement accuracy and can select multiple measurement points along the edge of the double pit to detect the pit depth at multiple measurement points, which can greatly improve the detection accuracy.

[0023] 3. By combining a laser rangefinder and a camera, the verticality of the two pits can be checked, and high-precision positioning of the pit edges can be achieved.

[0024] 4. An air extraction hole is provided on the base plate. The aluminum-plastic film can be adsorbed through the air extraction hole, thereby improving the positioning accuracy of the aluminum-plastic film. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0026] Figure 2 This is a side view of the overall structure of the embodiment;

[0027] Figure 3 This is a schematic diagram of the overall structure of the base plate in an embodiment.

[0028] In the picture:

[0029] 100. Support mechanism; 110. Base; 120. Support seat; 121. Column; 122. Top plate; 122a. First guide rail;

[0030] 200. Positioning mechanism; 210. Base plate; 211. Air extraction port; 212. Air chamber; 213. Air pipe; 220. Pressure plate; 230. Cylinder;

[0031] 300. Measuring mechanism; 310. Laser rangefinder; 320. Camera; 330. Mount; 331. Second guide rail;

[0032] 400. Control mechanism; 410. Start switch. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figure 1-3 As shown, a double-pit depth detection device for soft-pack aluminum-plastic film includes a support mechanism 100, a positioning mechanism 200, a measuring mechanism 300, and a control mechanism 400.

[0035] The support mechanism 100 includes a base 110, and the positioning mechanism 200 includes a base plate 210, a pressure plate 220, and a drive unit. The base plate 210 is fixed to the base 110 and is used to place the aluminum-plastic film. The pressure plate 220 is vertically and vertically positioned directly above the base plate 210 via the drive unit. When the aluminum-plastic film to be tested is placed on the base plate 210, the pressure plate 220 descends to fit against the top of the aluminum-plastic film, thereby clamping the aluminum-plastic film in cooperation with the base plate 210 for positioning the tested item. To prevent displacement during the detection process and improve detection accuracy, in this embodiment, a pressure sensor is integrated on the pressure plate 220. The pressure sensor is used to monitor the downward pressure provided by the pressure plate 220 to the aluminum-plastic film in real time and feed it back to the control module of the drive unit. That is, during the pressing of the aluminum-plastic film, the pressure provided by the pressure plate 220 to the aluminum-plastic film can be detected in real time, which is the pressure that the aluminum-plastic film needs to withstand. Excessive pressure will cause the aluminum-plastic film to deform, and insufficient pressure will cause the aluminum-plastic film to be unstable in positioning. Therefore, when pressing... When the force sensor detects that the downward pressure reaches a preset threshold, it feeds the pressure value back to the control module of the drive unit. The control module then controls the drive unit to stop operating, and the pressure plate 220 remains in that position, providing reasonable downward pressure to the aluminum-plastic film. This ensures the stability of the positioning and prevents deformation of the aluminum-plastic film. The measuring mechanism 300 includes a laser rangefinder 310. After the aluminum-plastic film is completely positioned, the depth of the double pits on the aluminum-plastic film can be detected by the laser rangefinder 310. The laser rangefinder 310 is movably set directly above the pressure plate 220. By moving, it can find the edges of the double pits on the aluminum-plastic film. After finding the edges, the laser rangefinder 310 is used to select multiple measurement points along multiple edges of the double pits and measure the pit depth at multiple measurement points. The laser rangefinder 310 itself has high measurement accuracy. After taking multiple measurements, the pit depth of each part of the double pit can be measured, and the measurement accuracy can be guaranteed, reducing system errors and measurement errors.

[0036] Both the base plate 210 and the pressure plate 220 are made of transparent material, which facilitates the detection by the laser rangefinder 310.

[0037] In this embodiment, the preset threshold is set to 100N. When the current pressure reaches this value, the control drive unit stops operating, and the measurement accuracy of the laser rangefinder 310 can reach 0.1mm.

[0038] Furthermore, the support mechanism 100 also includes a support base 120 located above the base 110. The support base 120 is used to provide support for the laser rangefinder 310, the drive unit, and the pressure plate 220, so that they can be arranged directly above the base plate 210. The support base 120 includes a column 121 and a top plate 122 fixed to the top of the column 121. The drive unit is fixed on the top plate 122, and the piston rod of the drive unit can pass through the top plate 122 and connect with the pressure plate 220. That is, the drive unit can drive the pressure plate 220 to move up and down between the top plate 122 and the base plate 210 to achieve clamping and unlocking of the aluminum-plastic film.

[0039] Furthermore, four columns 121 are respectively arranged at the four corners of the base 110, and the four corners of the top plate 122 are respectively connected to the top of the four columns 121. The four corners of the pressure plate 220 are respectively movably sleeved on the four columns 121 and can move up and down along the columns 121. That is, the four columns 121 can provide stable support for the top plate 122 and also provide guidance for the pressure plate 220, so that it can only move in the vertical direction, ensuring the stability of the lifting and lowering movement of the pressure plate 220.

[0040] In this embodiment, the base plate, pressure plate, and top plate are all transparent, which is beneficial to the laser rangefinder 310.

[0041] Furthermore, in this embodiment, the driving unit is configured as a cylinder 230. Two cylinders 230 are symmetrically arranged on both ends of the top plate 122, and the piston rods of the two cylinders 230 pass through the top plate 122 and connect with both ends of the pressure plate 220. That is, the two cylinders 230 can act synchronously, thereby driving both ends of the pressure plate 220 to rise and fall synchronously, which can improve the stability of the lifting and lowering of the pressure plate 220.

[0042] In this embodiment, in addition to the cylinder 230, the drive unit can also be a hydraulic cylinder, an electric cylinder, or other types of drive components.

[0043] Furthermore, a through-hole area is provided in the middle of the transparent top, which extends through the upper and lower sides of the top plate 122. The laser rangefinder 310 is located directly above the through-hole area and together with the laser rangefinder 310, it detects the aluminum-plastic film pit located directly below the through-hole area.

[0044] Furthermore, in order to realize the displacement of the laser rangefinder 310, the measuring mechanism 300 also includes a fixed frame 330. The top plates 122 on both sides of the through hole area are provided with first guide rails 122a arranged along their length direction. The two ends of the fixed frame 330 are slidably connected to the two first guide rails 122a respectively. The fixed frame 330 is provided with a second guide rail 331 arranged along the width direction of the top plate 122. Both laser rangefinders 310 can be moved to connect with the second guide rail 331, thereby realizing the bidirectional displacement of the two laser rangefinders 310 and improving their detection range. Using two laser rangefinders 310, points can be selected on both sides of the pit simultaneously, which can speed up the detection speed. At the same time, the two laser rangefinders 310 can move synchronously by moving the fixed frame on the first guide rail, realizing simultaneous detection on both sides.

[0045] Furthermore, the measuring mechanism 300 also includes a camera 320. Two cameras 320 are symmetrically arranged on both sides of the base 110. The camera 320 is used to cooperate with the laser rangefinder 310 to check the verticality of the double pits. It can solve the problem of pit depth data distortion caused by the tilting of the aluminum-plastic film in traditional measurement. In addition to solving this problem, the camera 320 can also cooperate with the laser rangefinder 310 to form a stereo vision system, cross-verify the laser positioning results, and ensure that the laser rangefinder 310 can quickly locate the edge of the pit.

[0046] Furthermore, the two cameras 320 are fixed to the symmetrical sides of the base 110 by two fixing plates, and the cameras 320 have integrated light sources for illuminating the aluminum-plastic film. Since the cameras 320 have their own light sources, the entire device can be used in a sealed dark room, eliminating interference caused by ambient light.

[0047] In this embodiment, after the laser rangefinder 310 and camera 320 complete the measurement of the two pits, the data results will be transmitted to the data panel connected to the computer. The depth data of the two pits will be automatically calculated and verified. The range and corresponding point difference of the two pit data will be calculated. The pit depth will be evaluated according to the set single pit depth standard, the double pit potential difference standard, and the range standard of each point of the two pits.

[0048] Furthermore, the base plate 210 is provided with an air extraction hole 211, an air chamber 212, and an air pipe 213. Multiple air chambers 212 are spaced apart within the base plate 210, and each air chamber 212 is connected to multiple air extraction holes 211. One end of the air extraction hole 211 is connected to the air chamber 212, and the other end of the air extraction hole 211 is located at the top of the base plate 210. One end of the air pipe 213 is connected to the air chamber 212, and the other end of the air pipe 213 can extend out of the base plate 210. The aluminum-plastic film is placed on the bottom plate 210 and connected to the air extraction device. When the aluminum-plastic film is placed on the bottom plate 210, the air extraction device can be activated. The air extraction device will extract the gas in the air chamber 212 and form a negative pressure in the air chamber 212. The air chamber 212 needs to be replenished with gas through the air extraction hole 211. Therefore, the air extraction hole 211 is kept in the state of drawing in gas, which will firmly adsorb the aluminum-plastic film on the bottom plate 210, restrict the movement of the aluminum-plastic film, and avoid the low measurement accuracy caused by the movement of the aluminum-plastic film.

[0049] Of course, the control mechanism 400 mainly includes a start switch 410, which is electrically connected to the positioning mechanism 200 and the measuring mechanism 300, and can control the two to start sequentially. In this embodiment, when the start switch 410 is turned on, the air extraction device on one side of the base plate 210 is opened first, and the aluminum-plastic film is adsorbed by the air extraction hole 211. Then, the cylinder 230 drives the pressure plate 220 to descend and clamp the aluminum-plastic film. Then, the light sources in the two cameras 320 are turned on to illuminate and image. The two laser rangefinders 310 will automatically move quickly on the first guide rail 122a first, and cooperate with the camera 320 to find the edge of the double pit of the aluminum-plastic film, that is, the edge of the pit. During the fast scan, the verticality is checked in cooperation with the camera 320. After finding the edge, the laser rangefinder 310 will return to the initial position and start a slow scan. Five points are selected on the edge of the double pit for distance measurement. After the single-sided test is completed, the remaining edges are tested. After the distance is measured, the position image is performed, the difference is calculated and verified. After the detection process is completed, the start switch 410 can be turned off.

[0050] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0051] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0052] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A soft pack aluminum-plastic film double-pit depth detection device, characterized in that, include: Support mechanism, including a base; The positioning mechanism includes a base plate, a pressure plate, and a drive unit. The base plate is fixed on the base and is used to place the aluminum-plastic film. The pressure plate is vertically and vertically positioned directly above the base plate by the drive unit and can cooperate with the base plate to clamp the aluminum-plastic film. The measuring mechanism includes a laser rangefinder, which is movably positioned directly above the pressure plate for selecting multiple measuring points along the edge of the double pits and measuring the pit depth of the double pits. The pressure plate is integrated with a pressure sensor, which is used to monitor the downward pressure provided by the pressure plate to the aluminum-plastic film in real time and feed it back to the control module of the drive unit. When the downward pressure reaches a preset threshold, the drive unit stops operating.

2. The soft package aluminum-plastic film double-pit depth detection device according to claim 1, characterized in that, The support mechanism also includes a support base located above the base. The support base includes a column and a top plate fixed to the top of the column. The drive unit is fixed to the top plate, and the piston rod of the drive unit can pass through the top plate and connect with the pressure plate.

3. The soft pouch LAM wrap dual pit depth detection device of claim 2, wherein, The four columns are respectively arranged at the four corners of the base. The four corners of the top plate are respectively connected to the tops of the four columns. The four corners of the pressure plate are respectively movably sleeved on the four columns and can move up and down along the columns.

4. The soft pouch LAM wrap dual pit depth detection device of claim 2, wherein, The drive unit is configured as a cylinder, with two cylinders symmetrically arranged at both ends of the top plate, and the piston rods of the two cylinders passing through the top plate and connecting to both ends of the pressure plate.

5. The soft pouch LAM wrap dual pit depth detection device of claim 2, wherein, The top plate has a through-hole area in the middle, and the laser rangefinder is located directly above the through-hole area.

6. The soft pouch LAM wrap double-groove depth detection device according to claim 5, characterized in that, The measuring mechanism also includes a fixed frame. The top plates on both sides of the through hole area are provided with first guide rails arranged along their length direction. The two ends of the fixed frame are slidably connected to the two first guide rails respectively. The fixed frame is provided with second guide rails arranged along the width direction of the top plate. The two laser rangefinders are movably connected to the second guide rails.

7. The soft pouch LAM wrap dual pit depth detection device of claim 1, wherein, The measuring mechanism also includes cameras, with two cameras symmetrically arranged on both sides of the base. The cameras are used in conjunction with the laser rangefinder to check the verticality of the double pits.

8. The soft pouch LAM wrap dual pit depth detection device of claim 7, wherein, The two cameras are respectively fixed on the two symmetrical sides of the base by two fixing plates, and the cameras have integrated light sources for illuminating the aluminum-plastic film.

9. The soft pouch LAM wrap dual pit depth detection device of claim 1, wherein, The base plate is provided with an air extraction hole, an air chamber, and an air pipe. Multiple air chambers are arranged at intervals within the base plate, and each air chamber is connected to multiple air extraction holes. One end of the air extraction hole is connected to the air chamber, and the other end of the air extraction hole is located at the top of the base plate. One end of the air pipe is connected to the air chamber, and the other end of the air pipe can extend out to one side of the base plate and is connected to an air extraction device.

10. The soft pouch LAM wrap dual pit depth detection device of claim 1, wherein, It also includes a control mechanism, which includes a start switch that is electrically connected to the positioning mechanism and the measuring mechanism.

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